Laterally-adjustable lens-carriage.



PATENTED AUG. 11

F. B. CASE. LATERALLY ADJUSTABLE LENS CARRIAGE.

APPLICATION TILED APR. 15, 1903.

N0 MODEL.

jnwwl'o c UNITED STATES Patented August 11, 1903.

PATENT ()FFICE.

FRANK B. CASE, OF ROCHESTER, NEW YORK.

SPECIFICATION forming part of Letters Patent No. 736,214, dated August 11,1903.

Application filed April 15,1903. Serial No. 152,678- (No model.)

To col] whom, it may concern:

Be it known that I, FRANK B. CASE, a citizen of the United States, and a resident of Rochester, in the county of Monroe and State of New York, have invented anew and Improved Laterally-Adj ustable Lens-Carriage, of which the following is a specification.

The object of my invention is to provide an economical and efficient lateral adjustment for the lens-carriage of a camera whereby such lens-carriage may be readily adjusted and secured at any desired point within a suitable range laterally relative to the bed-plate of the camera.

With this object in view my invention consists inthe conformation, cooperation, and arrangement of parts shown in the accompanying drawings, in which Figure 1 is a perspective view of only such parts of a lens carriage as are necessary to show the assembled mechanism made use of in my invention. Fig. 2 is a sectional view of my mechanism, taken along the dotted line in y of Fig. 1 and through the axis of rod a and with such rod a and the milled operating-head d shown in full. Fig. 3 is a view of the complete mechanism as seen from the back. Fig. i is a side view of the lower part of the lenscarriage with standard e, milled head (Z, and the wings of the slide g nearer to the observer removed. Fig. 5 is a side view of the lower parts of the lens-carriage with milled head cl removed. Fig. 6 is a perspective view of the slide g.

Similar letters refer to similar parts throughout the severalviews.

As seen in Fig. 1, the two standards 6 and e are secured together at the top by means of yoke sand at the lower end by means of a specially-shaped base-platef, screwed to each of such standards 011 three sides thereof. Vertically adjustable between the standards 6 and 6 there is secured in' the wellknown way the lens-board Z.

As seen in Figs. 2, 3, and 4, a shaft or rod a is eccentrically journaled in the bearings c and a, secured on the outside of the lower end of the standards 6 and 6, respectively. One end of the rod a carries a milled head (I by which it can be turned. \Vound around shaft a in such a way as to oppose the direction of motion given to milled head d is seen a spring h, one end of which is secured in a hole 2', drilled in the rod a, while the other end it rests against the side f of base-plate f. This rod a is arranged to slide horizontally through suitable holes therefor seen in the two wings of a slide g. This slide g is secured to the usual guide-blocks, sliding and adj ustably secured at any desired point longitudinally on the usual bed-plate, all as indicated in outline in Fig. 1. Such features forming no part of my present invention are only briefly referred to herein.

The spring h by reason of its connections already described transmits to the rod 60 a tendencyto turnin such a direction as to clamp the slide g against the under side of the baseplate f. The different parts, as rod a, spring 71 and slide g, are so adjusted that spring h normally locks the two wings g and g of slide g securely against the under surface of the base-platef.

It is obvious that by turning milled head d the slide 9 will be unlocked, leaving the lenscarriage free to be moved to the rightor to the left, while such slide g is retained in its desired longitudinal adjustment. By releasing milled head d the carriage is rigidly locked to the slide g and therefore to the bed-plate 75.

What I claimis-- 1. Two camera elements arranged to slide one upon the other,cooperating guiding mechanisms carried by such elements, a rod, slidable through and rotatable in suitable openings therefor in one and eccentrically journaled in the other of such elements, a handle for turning such rod to clamp such elements together in any desired position of relative adjustment.

2. Two camera elements arranged to slide one upon the other,cooperating guiding mechanisms carried by such elementsfa rod, slidable through and rotatable in suitable openings therefor in one and eccentrically journaled in the other of such elements, a handle on such rod, and a spring operating to turn such rod to clamp such elements together in any desired position of relative adjustment. rod and one of such elements operable to 3. Two camera elements, sliding one upon clamp such elements together in any desired the other, cooperating guiding mechanisms position of relative adjustment. carried by such elements comprising a rod, FRANK B. CASE. 5 carried by one of such elements, and a mem- WVitnesses:

FRED P. MANSBENDT,

ber carried by the other arranged to slide upon such rod, eccentric connections between such A. PEARL MOORE. 

